How do I redirect a url?

[Hexenmeister]

I am trying to redirect any url that starts with ""www.reddit" to "old.reddit"
so for example whenever I visit "www.reddit.com/r/all" it would automatically redirect me to "old.reddit.com/r/all"

I have used this: https://kb.adguard.com/en/general/how-to-create-your-own-ad-filters#redirect-modifier
to create the following custom filter:
||www.reddit.com$www,redirect=old

but it doesn't seem to work. Anyone know what I'm doing wrong?

 

[Alex302]

Hi. $redirect rules are for replacing recources by hardcoded dummyes.
You can use JS rules for reditecting from www to old

 

[Hexenmeister]

Hi. $redirect rules are for replacing recources by hardcoded dummyes.
You can use JS rules for reditecting from www to old

Do you know where I can access JS rules?
right now I am using the user rules page in content blocking.

 

[Altrem]

I use a add-on for Firefox that does this